His patience is frequently tested, sometimes to the breaking point, by his wife's antics.

His patience is frequently tested by his wife's antics.

A system frequently tested and revised, using automation only where essential.

Such a skill is tested frequently in helping to run a Vice-Presidential race.

For this reason the instruments had to be frequently tested and repaired.

You will need to have your blood tested frequently while you are taking an anticoagulant.

Their disaster recovery plans are also tested and audited frequently.

For an athlete to use drugs when she is frequently tested would be "stupid," Smith said.

The curvature could absorb hundreds of pounds' pressure per square centimeter, which the weather frequently tested.

The men are tested frequently, but even testing doesn't end the trickery.